Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Effect of Pole to Slot Ratio on Cogging torque and EMF Waveform in Fractional Slotted PM motor

PM 모터에서 극당 슬롯비율이 코깅토오크와 역기전력 파형에 미치는 영향력에 관한 연구

  • Kim, Do-Wook (Energy Conversion Lab., Dept. of Electrical Engineering, Hanyang University) ;
  • Min, Cheol-Ki (Energy Conversion Lab., Dept. of Electrical Engineering, Hanyang University) ;
  • Jun, Myung-Sun (Energy Conversion Lab., Dept. of Electrical Engineering, Hanyang University) ;
  • Lee, Kab-Jae (Energy Conversion Lab., Dept. of Electrical Engineering, Hanyang University) ;
  • Lee, Ju (Energy Conversion Lab., Dept. of Electrical Engineering, Hanyang University)
  • 김도욱 (한양대학교 전자전기공학부 에너지변환 연구실) ;
  • 민철기 (한양대학교 전자전기공학부 에너지변환 연구실) ;
  • 전명선 (한양대학교 전자전기공학부 에너지변환 연구실) ;
  • 이갑재 (한양대학교 전자전기공학부 에너지변환 연구실) ;
  • 이주 (한양대학교 전자전기공학부 에너지변환 연구실)
  • Published : 2002.04.25
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Abstract

Conventional integral slot design tend to have a high cogging torque and large end turns which contribute to copper losses. The fractional slot is more effective compared to integral slot in the cogging torque and EMF waveform. The effectiveness of fractional slot can be maximized by selecting optimal pole to slot ratio. This paper presents the effect of pole to slot ratio on the cogging torque and EMF waveform in the fractional slotted permanent magnet(PM) motor. The effectiveness of the proposed designs had been confirmed by comparing cogging torque, and EMF waveform between conventional and new models which are analyzed by Finite Element Method(FEM).

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